Visa for wife procedure

Hi everyone,
I am from UK n my brother-in-law got job in Riyadh... He got his iqama n now he has submitted the marriage certificate n other documents for his wife visa n other words for my sister's visa... Jst wanna know wat is the procedure now??? Will she get her visa there or will she have to go to Saudi embassy in UK 4 her visa??? Also wat about the medical n all? Does she all have to go 4 complete medical test before she get her visa in UK like chest x-ray, etc. Or is it only for the employee n not family???
Thanx

https://www.expat.com/forum/viewtopic.php?id=283602   

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